There are many advantages to using lithium batteries in you E Bike or
Electric Vehicle Applications (such as Electric Cars). Lithium batteries are
light, very energy dense and can give a high power output, provided they are
properly specified.

Their popularity however has lead to a very large number of batteries being
offered from e-commerce sources that do not adequately describe, the make up up
of the battery pack. Many battery packs will not even describe the brand of cell
used within the pack yet will still be £400 to purchase, it is not thought that
buying an unbranded and often unguaranteed, battery pack represents good value.

Lithium Batteries EU, is s UK based company, who provide UK assembled custom lithium
battery packs, at competitive rates. We want to provide you with a specification
of the battery pack you are enquiring about, with details included as:

The below prices are approximate and you will need to obtain a quote from us,
prior to confirming your order and making payment. We do this very quickly and
provide you answer by email etc. then we can normally have the battery to you
within 10 working days. We would not recommend anything smaller than a 16ah
battery, bigger batteries last a lot longer in terms of lifespan as well as in
daily use.

E Bike & E Trikes and Scooters Battery Prices

Choosing the size of battery you need will depend on a number of factors. We
recommend that you spend some time look at this great
e bike range calculator,
alternatively just pick the best battery you can afford. A 20ah battery at 36
volts will do a 20 mile round trip in hilly terrain with little or no pedaling.
Although you can buy a higher amp hour battery for an existing e bike, you can
not generally change the voltage, copy the existing voltage.

The for any given voltage of battery the more you spend
the more useful the battery will be. Say you need to get 5 miles each
way to work, on flat terrain then in the first instance the cheapest
battery here would likely do that.

However, in 5 or 10 years time the battery will start to loose capacity
(all batteries do this) and so if you loose 30% capacity you now have
battery that is perhaps too small to get where you want to go.

Also consider that the more energy you "suck out" of the battery every
time you use it, the more quickly it degrades. This is called depth of
discharge. At 50% depth of discharge a battery may last 1000 charges at
80% depth of discharge it may last 400.

So a small battery is lest versatile and will not last as long (years).
Choose a larger battery for added future proof(ness).

24 Volts

Ah

16

20

26

30

Wh

384

480

624

720

Estimate (£)

360

425

550

650

36 Volts

Ah

16

20

26

30

Wh

576

720

936

1080

Estimate (£)

540

640

675

975

48 Volts

Ah

16

20

26

30

Wh

768

960

1248

1440

Estimate (£)

720

850

1100

1300

Electric Car Battery Prices

Batteries for electric cars are typically much larger than those used for E
Bikes. In fact the sizes shown below are at the smaller end of scale. Higher
voltage controllers can be very expensive, although we have provided an
indicative price below we would require some details to provide quote.

48 Volts

Ah

135

Wh

6480

Estimate (£)

5000

Notes

Such as for GWizz

72 Volts

Ah

90

Wh

6480

Estimate (£)

6000

Notes

Such as for Twizy*

*You may look at the above and think; "A Twizy only costs £7000 new". But
remember the battery in a Twizy is leased. . .not bought. You pay a monthly
charge to Renault whilst using
their precious lithium.

There are new battery technologies and chemistries becoming available all the
time. Lithium Titanium Dioxide for example, or a battery system that
connects via Bluetooth to give you status updates as you ride or drive. These
are options we would be happy to discuss.

There are a number of different battery chemistries available and they are
changing all of the time. You probably have a Lithium Polymer battery (which
contains more energy weight for weight than a hand grenade) in your pocket right
now, as they are used in smart phones. The big heavy battery in you car is a lead acid battery.

Lithium Titanium Dioxide batteries are designed to have very long life
span (1000 + charges).

Lithium Polymers Batteries are good for high discharge applications.

Lithium Iron Phosphate Batteries are relatively safe and some have high
discharge rates.

Brands such as Sony and Panasonic are well known house hold names and we
often have customers request these sells in their packs. Other cells which are
also excellent quality are Samsung, Sanyo, Headway (LifePo4) and Boston Power, these
lesser known brands can offer similar or in some cases superior performance to
the main brands, at a lower cost.

18650 Cells are the AA of the lithium world, they are a very common cell that
we use on our packs. Other cells such as Boston Power cells, use a different
shape, but provide similar performance characteristics, when configured in like
for like battery packs.

The BMS (Battery Management System) controls the charging and discharging or
the battery pack, often with 10's of wires connected to, and monitoring the
status of the cells to prevent over charging and over discharging, In short the
quality of the BMS will dictate how long the cells within your battery pack
lasts. You can choose you BMS from a list we will provide, or we can recommend
our most reliable options.

Dependent on the Voltage and Wattage of you application, you will require a
particular BMS (Battery Management System). A typical BMS for commuter use, and
some heavy haul application would be a 30A constant current BMS. A 30A constant
current BMS, will cover for spikes in energy demand up to 50A for very short
periods, but it is not recommended to draw over 30A in total.

The higher the voltage your system is, the more watts you can deliver to the
motor, at a given amperage. If you run a 24V system at 30A you will be able to
get 750W or there about, but at 48V (still with 30A current) you will be
delivering 1500W to the motor. As you can see a 30A BMS will run, so fairly
powerful motors. Bit some motors (obviously for off-road use only) may require
more power such as the
Crystalyte "Crown" Motor. Which is a beast.

The C rate of the cell is how much current it can safely provide without
damage to the cell. A 3.2ah lithium cell, with a C rate of 3 will provide 9.6
amps of current. This may seem low, but consider for even a low capacity lithium
battery pack, the cells will be connected in parallel (perhaps 5 in parallel to
provide 15ah) so this will result in a maximum current of 45 amps, which is much
better.

We normally include a 2 amp charger with each battery pack as a matter of
course, this will charge even the largest E Bike Batteries over night, and it is
better to charge a battery pack as slowly as possible. We can provide high
current chargers if requested.